1999-02-20 23:05:45 +01:00
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/* Look up a symbol in the loaded objects.
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2007-06-09 21:45:57 +02:00
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Copyright (C) 1995-2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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1999-02-20 23:05:45 +01:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 06:58:11 +02:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1999-02-20 23:05:45 +01:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 06:58:11 +02:00
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Lesser General Public License for more details.
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1999-02-20 23:05:45 +01:00
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2001-07-06 06:58:11 +02:00
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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1999-02-20 23:05:45 +01:00
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2006-07-10 23:59:43 +02:00
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1999-02-20 23:05:45 +01:00
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/* Inner part of the lookup functions. We return a value > 0 if we
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found the symbol, the value 0 if nothing is found and < 0 if
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something bad happened. */
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2003-06-11 23:57:23 +02:00
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static int
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2004-03-07 06:26:02 +01:00
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__attribute_noinline__
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2006-07-10 23:59:43 +02:00
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do_lookup_x (const char *undef_name, uint_fast32_t new_hash,
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unsigned long int *old_hash, const ElfW(Sym) *ref,
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struct sym_val *result, struct r_scope_elem *scope, size_t i,
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2004-03-07 06:26:02 +01:00
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const struct r_found_version *const version, int flags,
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struct link_map *skip, int type_class)
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1999-02-20 23:05:45 +01:00
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{
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[BZ #2510, BZ #2830, BZ #3137, BZ #3313, BZ #3426, BZ #3465, BZ #3480, BZ #3483, BZ #3493, BZ #3514, BZ #3515, BZ #3664, BZ #3673, BZ #3674]
2007-01-11 Jakub Jelinek <jakub@redhat.com>
* sysdeps/i386/soft-fp/sfp-machine.h: Remove.
* sysdeps/x86_64/soft-fp/sfp-machine.h: Likewise.
2007-01-10 Ulrich Drepper <drepper@redhat.com>
* io/fts.c: Make sure fts_cur is always valid after return from
fts_read.
Patch by Miloslav Trmac <mitr@redhat.com>.
2006-10-27 Richard Sandiford <richard@codesourcery.com>
* elf/elf.h (R_MIPS_GLOB_DAT): Define.
(R_MIPS_NUM): Bump by 1.
2007-01-03 Jakub Jelinek <jakub@redhat.com>
* posix/execvp.c: Include alloca.h.
(allocate_scripts_argv): Renamed to...
(scripts_argv): ... this. Don't allocate buffer here nor count
arguments.
(execvp): Use alloca if possible.
* posix/Makefile: Add rules to build and run tst-vfork3 test.
* posix/tst-vfork3.c: New test.
* stdlib/Makefile (tst-strtod3-ENV): Define.
2007-01-02 Ulrich Drepper <drepper@redhat.com>
* posix/getconf.c: Update copyright year.
* nss/getent.c: Likewise.
* iconv/iconvconfig.c: Likewise.
* iconv/iconv_prog.c: Likewise.
* elf/ldconfig.c: Likewise.
* catgets/gencat.c: Likewise.
* csu/version.c: Likewise.
* elf/ldd.bash.in: Likewise.
* elf/sprof.c (print_version): Likewise.
* locale/programs/locale.c: Likewise.
* locale/programs/localedef.c: Likewise.
* nscd/nscd.c (print_version): Likewise.
* debug/xtrace.sh: Likewise.
* malloc/memusage.sh: Likewise.
* malloc/mtrace.pl: Likewise.
* debug/catchsegv.sh: Likewise.
2006-12-24 Ulrich Drepper <drepper@redhat.com>
* malloc/malloc.c (sYSMALLOc): Remove some unnecessary alignment
attempts.
2006-12-23 Ulrich Drepper <drepper@redhat.com>
* posix/wordexp.c: Remove some unnecessary tests.
2006-12-20 SUGIOKA Toshinobu <sugioka@itonet.co.jp>
* sysdeps/unix/sysv/linux/sh/bits/shm.h: New file.
* nss/getXXbyYY_r.c: Include atomic.h.
(INTERNAL (REENTRANT_NAME)): Write startp after start_fct,
add atomic_write_barrier () in between.
2006-11-28 Jakub Jelinek <jakub@redhat.com>
* elf/dl-support.c: Include dl-procinfo.h.
* sysdeps/powerpc/dl-procinfo.h (PPC_PLATFORM_POWER4,
PPC_PLATFORM_PPC970, PPC_PLATFORM_POWER5, PPC_PLATFORM_POWER5_PLUS,
PPC_PLATFORM_POWER6, PPC_PLATFORM_CELL_BE, PPC_PLATFORM_POWER6X):
Define.
(_dl_string_platform): Use PPC_PLATFORM_* macros instead of
hardcoded constants.
* sysdeps/powerpc/dl-procinfo.c (_dl_powerpc_platform): Use
PPC_PLATFORM_* macros for array designators.
2006-11-11 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/powerpc/dl-procinfo.c (_dl_powerpc_cap_flags): Add 3 new cap
names to the beginning.
(_dl_powerpc_platforms): Add "power6x".
* sysdeps/powerpc/dl-procinfo.h (_DL_HWCAP_FIRST): Decrease.
(HWCAP_IMPORTANT): Add PPC_FEATURE_HAS_DFP.
(_DL_PLATFORMS_COUNT): Increase.
(_dl_string_platform): Handle power6x case.
* sysdeps/powerpc/sysdep.h (PPC_FEATURE_PA6T, PPC_FEATURE_HAS_DFP,
PPC_FEATURE_POWER6_EXT): Define.
(PPC_FEATURE_POWER5, PPC_FEATURE_POWER5_PLUS): Correct Comment.
[-2^31 .. 2^31) range.
* sysdeps/unix/sysv/linux/bits/statvfs.h: Define ST_RELATIME.
* sysdeps/unix/sysv/linux/internal_statvfs.c (__statvfs_getflags):
Handle relatime mount option.
2006-12-13 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Include
kernel-features.h.
2006-12-11 Ulrich Drepper <drepper@redhat.com>
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Parse thousand
separators also if no non-zero digits found.
* stdlib/Makefile (tests): Add tst-strtod3.
[BZ #3664]
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Fix test to recognize
empty parsed strings.
* stdlib/Makefile (tests): Add tst-strtod2.
* stdlib/tst-strtod2.c: New file.
[BZ #3673]
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Fix exp_limit
computation.
* stdlib/Makefile (tests): Add tst-atof2.
* stdlib/tst-atof2.c: New file.
[BZ #3674]
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Adjust exponent value
correctly if removing trailing zero of hex-float.
* stdlib/Makefile (tests): Add tst-atof1.
* stdlib/tst-atof1.c: New file.
* misc/mntent_r.c (__hasmntopt): Check p[optlen] even when p == rest.
Start searching for next comma at p rather than rest.
* misc/Makefile (tests): Add tst-mntent2.
* misc/tst-mntent2.c: New test.
2006-12-08 Ulrich Drepper <drepper@redhat.com>
* malloc/memusage.c: Handle realloc with new size of zero and
non-NULL pointer correctly.
(me): Really write first record twice.
(struct entry): Make format bi-arch safe.
(dest): Write out more realloc statistics.
* malloc/memusagestat.c (struct entry): Make format bi-arch safe.
2006-12-05 Jakub Jelinek <jakub@redhat.com>
* nis/nis_subr.c (nis_getnames): Revert last change.
2006-12-03 Kaz Kojima <kkojima@rr.iij4u.or.jp>
* sysdeps/unix/sysv/linux/sh/sys/io.h: Removed.
2006-11-30 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/i386/i686/memcmp.S: Use jump table as the base of
jump table entries.
2006-11-30 Jan Kratochvil <jan.kratochvil@redhat.com>
* sysdeps/unix/sysv/linux/i386/clone.S: Provide CFI for the outermost
`clone' function to ensure proper unwinding stop of gdb.
* sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise.
2006-12-01 Ulrich Drepper <drepper@redhat.com>
* nscd/nscd.init: Remove obsolete and commented-out -S option
handling.
2006-11-23 Jakub Jelinek <jakub@redhat.com>
[BZ #3514]
* manual/string.texi (strncmp): Fix pastos from wcscmp description.
[BZ #3515]
* manual/string.texi (strtok): Remove duplicate paragraph.
2006-12-01 Jan Kratochvil <jan.kratochvil@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Fix compatibility with
libgcc not supporting `rflags' unwinding (register # >= 17).
2006-11-30 Jakub Jelinek <jakub@redhat.com>
* sunrpc/svc_run.c (svc_run): Set my_pollfd to new_pollfd if realloc
succeeded.
2006-11-29 Daniel Jacobowitz <dan@codesourcery.com>
Jakub Jelinek <jakub@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/sigaction.c (restore_rt): Add correct
unwind information.
* sysdeps/unix/sysv/linux/x86_64/Makefile: Provide symbols for
'restore_rt' even in the 'signal' directory.
* sysdeps/unix/sysv/linux/x86_64/ucontext_i.sym: Extend the regs list.
malloc crashed. Don't allocate memory unnecessarily in each
loop.
2006-10-21 Jakub Jelinek <jakub@redhat.com>
* resolv/mapv4v6addr.h (map_v4v6_address): Fix last change.
2006-11-20 Ulrich Drepper <drepper@redhat.com>
* resolv/mapv4v6addr.h (map_v4v6_address): Optimize a bit.
2006-11-18 Bruno Haible <bruno@clisp.org>
* sysdeps/unix/sysv/linux/i386/getgroups.c (__getgroups): Invoke
__sysconf only after having tried to call getgroups32.
2006-11-19 Ulrich Drepper <drepper@redhat.com>
* nss/nss_files/files-hosts.c (LINE_PARSER): Support IPv6-style
addresses for IPv4 queries if they can be mapped.
2006-11-16 Jakub Jelinek <jakub@redhat.com>
* sysdeps/x86_64/fpu/s_copysignf.S (__copysignf): Switch to .text.
* sysdeps/x86_64/fpu/s_copysign.S (__copysign): Likewise.
(signmask): Add .size directive.
(othermask): Add .type directive.
2006-11-14 Ulrich Drepper <drepper@redhat.com>
* po/nl.po: Update from translation team.
* timezone/zdump.c: Redo fix for BZ #3137.
2006-11-14 Jakub Jelinek <jakub@redhat.com>
* nss/nss_files/files-alias.c (get_next_alias): Set line back
to first_unused after parsing :include: file.
* timezone/africa: Update from tzdata2006o.
* timezone/antarctica: Likewise.
* timezone/asia: Likewise.
* timezone/australasia: Likewise.
* timezone/backward: Likewise.
* timezone/europe: Likewise.
* timezone/iso3166.tab: Likewise.
* timezone/northamerica: Likewise.
* timezone/southamerica: Likewise.
* timezone/zone.tab: Likewise.
* time/tzfile.c (__tzfile_read): Extend to handle new file format
on machines with 64-bit time_t.
* timezone/checktab.awk: Update from tzcode2006o.
* timezone/ialloc.c: Likewise.
* timezone/private.h: Likewise.
* timezone/scheck.c: Likewise.
* timezone/tzfile.h: Likewise.
* timezone/tzselect.ksh: Likewise.
* timezone/zdump.c: Likewise.
* timezone/zic.c: Likewise.
[BZ #3483]
* elf/ldconfig.c (main): Call setlocale and textdomain.
Patch mostly by Benno Schulenberg <bensberg@justemail.net>.
[BZ #3480]
* manual/argp.texi: Fix typos.
* manual/charset.texi: Likewise.
* manual/errno.texi: Likewise.
* manual/filesys.texi: Likewise.
* manual/lang.texi: Likewise.
* manual/maint.texi: Likewise.
* manual/memory.texi: Likewise.
* manual/message.texi: Likewise.
* manual/resource.texi: Likewise.
* manual/search.texi: Likewise.
* manual/signal.texi: Likewise.
* manual/startup.texi: Likewise.
* manual/stdio.texi: Likewise.
* manual/sysinfo.texi: Likewise.
* manual/syslog.texi: Likewise.
* manual/time.texi: Likewise.
Patch by Ralf Wildenhues <Ralf.Wildenhues@gmx.de>.
[BZ #3465]
* sunrpc/clnt_raw.c: Minimal message improvements.
* sunrpc/pm_getmaps.c: Likewise.
* nis/nss_nisplus/nisplus-publickey.c: Likewise.
* nis/nis_print_group_entry.c: Likewise.
* locale/programs/repertoire.c: Likewise.
* locale/programs/charmap.c: Likewise.
* malloc/memusage.sh: Likewise.
* elf/dl-deps.c: Likewise.
* locale/programs/ld-collate.c: Likewise.
* libio/vswprintf.c: Likewise.
* malloc/memusagestat.c: Likewise.
* sunrpc/auth_unix.c: Likewise.
* sunrpc/rpc_main.c: Likewise.
* nscd/cache.c: Likewise.
* locale/programs/repertoire.c: Unify output messages.
* locale/programs/charmap.c: Likewise.
* locale/programs/ld-ctype.c: Likewise.
* locale/programs/ld-monetary.c: Likewise.
* locale/programs/ld-numeric.c: Likewise.
* locale/programs/ld-time.c: Likewise.
* elf/ldconfig.c: Likewise.
* nscd/selinux.c: Likewise.
* elf/cache.c: Likewise.
Patch mostly by Benno Schulenberg <bensberg@justemail.net>.
2006-11-10 Jakub Jelinek <jakub@redhat.com>
* string/strxfrm_l.c (STRXFRM): Fix trailing \1 optimization
if N is one bigger than return value.
* string/tst-strxfrm2.c (do_test): Also test strxfrm with l1 + 1
and l1 last arguments, if buf is defined, verify the return value
equals to strlen (buf) and verify no byte beyond passed length
is modified.
2006-11-10 Ulrich Drepper <drepper@redhat.com>
* po/sv.po: Update from translation team.
* sysdeps/gnu/siglist.c (__old_sys_siglist, __old_sys_sigabbrev):
Use __new_sys_siglist instead of _sys_siglist_internal as
second macro argument.
(_old_sys_siglist): Use declare_symbol_alias macro instead of
strong_alias.
2006-11-09 Ulrich Drepper <drepper@redhat.com>
[BZ #3493]
* posix/unistd.h (sysconf): Remove const attribute.
* sysdeps/posix/getaddrinfo.c (getaddrinfo): Fix test for
temporary or deprecated addresses.
Patch by Sridhar Samudrala <sri@us.ibm.com>.
* string/Makefile (tests): Add tst-strxfrm2.
* string/tst-strxfrm2.c: New file.
2006-10-09 Jakub Jelinek <jakub@redhat.com>
* elf/dl-debug.c (_dl_debug_initialize): Check r->r_map for 0
rather than r->r_brk.
* string/strxfrm_l.c (STRXFRM): Do the trailing \1 removal
optimization even if needed > n.
2006-11-07 Jakub Jelinek <jakub@redhat.com>
* include/libc-symbols.h (declare_symbol): Rename to...
(declare_symbol_alias): ... this. Add ORIGINAL argument, imply
strong_alias (ORIGINAL, SYMBOL) in asm to make sure it preceedes
.size directive.
* sysdeps/gnu/errlist-compat.awk: Adjust for declare_symbol_alias
changes.
* sysdeps/gnu/siglist.c: Likewise.
2006-11-03 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/powerpc/fpu/bits/mathinline.h
[__LIBC_INTERNAL_MATH_INLINES]: Moved to ...
* sysdeps/powerpc/fpu/math_private.h: ...here. New file.
2006-11-05 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/sysconf.c (intel_check_word):
Update handling of cache descriptor 0x49 for new models.
* sysdeps/unix/sysv/linux/x86_64/sysconf.c (intel_check_word):
Likewise.
2006-11-02 Ulrich Drepper <drepper@redhat.com>
* configure.in: Work around ld --help change and avoid -z relro
test completely if the architecture doesn't care about security.
2006-11-01 Ulrich Drepper <drepper@redhat.com>
* po/sv.po: Update from translation team.
2006-10-31 Ulrich Drepper <drepper@redhat.com>
* stdlib/atexit.c (atexit): Don't mark as hidden when used to
generate compatibility version.
2006-10-29 Ulrich Drepper <drepper@redhat.com>
* configure.in: Relax -z relro requirement a bit.
* po/sv.po: Update from translation team.
2006-10-29 Jakub Jelinek <jakub@redhat.com>
* elf/dl-sym.c (do_sym): Use RTLD_SINGLE_THREAD_P.
* elf/dl-runtime.c (_dl_fixup, _dl_profile_fixup): Likewise.
* elf/dl-close.c (_dl_close_worker): Likewise.
* elf/dl-open.c (_dl_open_worker): Likewise.
* sysdeps/generic/sysdep-cancel.h (RTLD_SINGLE_THREAD_P): Define.
* configure.in: Require assembler support for visibility, compiler
support for visibility and aliases, linker support for various -z
options.
* Makeconfig: Remove conditional code which now is unnecessary.
* config.h.in: Likewise.
* config.make.in: Likewise.
* dlfcn/Makefile: Likewise.
* elf/Makefile: Likewise.
* elf/dl-load.c: Likewise.
* elf/rtld.c: Likewise.
* include/libc-symbols.h: Likewise.
* include/stdio.h: Likewise.
* io/Makefile: Likewise.
* io/fstat.c: Likewise.
* io/fstat64.c: Likewise.
* io/fstatat.c: Likewise.
* io/fstatat64.c: Likewise.
* io/lstat.c: Likewise.
* io/lstat64.c: Likewise.
* io/mknod.c: Likewise.
* io/mknodat.c: Likewise.
* io/stat.c: Likewise.
* io/stat64.c: Likewise.
* libio/stdio.c: Likewise.
* nscd/Makefile: Likewise.
* stdlib/Makefile: Likewise.
* stdlib/atexit.c: Likewise.
* sysdeps/generic/ldsodefs.h: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* sysdeps/i386/sysdep.h: Likewise.
* sysdeps/i386/i686/memcmp.S: Likewise.
* sysdeps/powerpc/powerpc32/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
* Makerules: USE_TLS support is now default.
* tls.make.c: Likewise.
* csu/Versions: Likewise.
* csu/libc-start.c: Likewise.
* csu/libc-tls.c: Likewise.
* csu/version.c: Likewise.
* dlfcn/dlinfo.c: Likewise.
* elf/dl-addr.c: Likewise.
* elf/dl-cache.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-iteratephdr.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-object.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-support.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-sysdep.c: Likewise.
* elf/dl-tls.c: Likewise.
* elf/ldconfig.c: Likewise.
* elf/rtld.c: Likewise.
* elf/tst-tls-dlinfo.c: Likewise.
* elf/tst-tls1.c: Likewise.
* elf/tst-tls10.h: Likewise.
* elf/tst-tls14.c: Likewise.
* elf/tst-tls2.c: Likewise.
* elf/tst-tls3.c: Likewise.
* elf/tst-tls4.c: Likewise.
* elf/tst-tls5.c: Likewise.
* elf/tst-tls6.c: Likewise.
* elf/tst-tls7.c: Likewise.
* elf/tst-tls8.c: Likewise.
* elf/tst-tls9.c: Likewise.
* elf/tst-tlsmod1.c: Likewise.
* elf/tst-tlsmod13.c: Likewise.
* elf/tst-tlsmod13a.c: Likewise.
* elf/tst-tlsmod14a.c: Likewise.
* elf/tst-tlsmod2.c: Likewise.
* elf/tst-tlsmod3.c: Likewise.
* elf/tst-tlsmod4.c: Likewise.
* elf/tst-tlsmod5.c: Likewise.
* elf/tst-tlsmod6.c: Likewise.
* include/errno.h: Likewise.
* include/link.h: Likewise.
* include/tls.h: Likewise.
* locale/global-locale.c: Likewise.
* locale/localeinfo.h: Likewise.
* malloc/arena.c: Likewise.
* malloc/hooks.c: Likewise.
* malloc/malloc.c: Likewise.
* resolv/Versions: Likewise.
* sysdeps/alpha/dl-machine.h: Likewise.
* sysdeps/alpha/libc-tls.c: Likewise.
* sysdeps/generic/ldsodefs.h: Likewise.
* sysdeps/generic/tls.h: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* sysdeps/ia64/dl-machine.h: Likewise.
* sysdeps/ia64/libc-tls.c: Likewise.
* sysdeps/mach/hurd/fork.c: Likewise.
* sysdeps/mach/hurd/i386/tls.h: Likewise.
* sysdeps/powerpc/powerpc32/dl-machine.c: Likwise.
* sysdeps/powerpc/powerpc32/dl-machine.h: Likewise.
* sysdeps/powerpc/powerpc64/dl-machine.h: Likewise.
* sysdeps/s390/libc-tls.c: Likewise.
* sysdeps/s390/s390-32/dl-machine.h: Likewise.
* sysdeps/s390/s390-64/dl-machine.h: Likewise.
* sysdeps/sh/dl-machine.h: Likewise.
* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
* sysdeps/sparc/sparc64/dl-machine.h: Likewise.
* sysdeps/x86_64/dl-machine.h: Likewise.
[BZ #3426]
* stdlib/stdlib.h: Adjust comment for canonicalize_file_name to
reality.
2006-10-27 Jakub Jelinek <jakub@redhat.com>
* elf/dl-lookup.c (_dl_debug_bindings): Remove unused symbol_scope
argument.
(_dl_lookup_symbol_x): Adjust caller.
* sysdeps/generic/ldsodefs.h (struct link_namespaces): Remove
_ns_global_scope.
* elf/rtld.c (dl_main): Don't initialize _ns_global_scope.
* elf/dl-libc.c: Revert l_scope name changes.
* elf/dl-load.c: Likewise.
* elf/dl-object.c: Likewise.
* elf/rtld.c: Likewise.
* elf/dl-close.c (_dl_close): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise. If not SINGLE_THREAD_P,
always use __rtld_mrlock_{change,done}. Always free old scope list
here if not l_scope_mem.
* elf/dl-runtime.c (_dl_fixup, _dl_profile_fixup): Revert l_scope name
change. Never free scope list here. Just __rtld_mrlock_lock before
the lookup and __rtld_mrlock_unlock it after the lookup.
* elf/dl-sym.c: Likewise.
* include/link.h (struct r_scoperec): Remove.
(struct link_map): Replace l_scoperec with l_scope, l_scoperec_mem
with l_scope_mem and l_scoperec_lock with l_scope_lock.
2006-10-25 Ulrich Drepper <drepper@redhat.com>
* sysdeps/gnu/netinet/tcp.h: Define TCP_CONGESTION.
2006-10-18 Ulrich Drepper <drepper@redhat.com>
* configure.in: Disable building profile libraries by default.
2006-10-18 Ulrich Drepper <drepper@redhat.com>
* elf/dl-lookup.c (_dl_lookup_symbol_x): Add warning to
_dl_lookup_symbol_x code.
2006-10-17 Jakub Jelinek <jakub@redhat.com>
* elf/dl-runtime.c: Include sysdep-cancel.h.
(_dl_fixup, _dl_profile_fixup): Use __rtld_mrlock_* and
scoperec->nusers only if !SINGLE_THREAD_P. Use atomic_*
instead of catomic_* macros.
* elf/dl-sym.c: Include sysdep-cancel.h.
(do_sym): Use __rtld_mrlock_* and scoperec->nusers only
if !SINGLE_THREAD_P. Use atomic_* instead of catomic_* macros.
* elf/dl-close.c: Include sysdep-cancel.h.
(_dl_close): Use __rtld_mrlock_* and scoperec->nusers only
if !SINGLE_THREAD_P. Use atomic_* instead of catomic_* macros.
* elf/dl-open.c: Include sysdep-cancel.h.
(dl_open_worker): Use __rtld_mrlock_* and scoperec->nusers only
if !SINGLE_THREAD_P. Use atomic_* instead of catomic_* macros.
2006-10-17 Jakub Jelinek <jakub@redhat.com>
[BZ #3313]
* malloc/malloc.c (malloc_consolidate): Set maxfb to address of last
fastbin rather than end of fastbin array.
2006-10-18 Ulrich Drepper <drepper@redhat.com>
* sysdeps/i386/i486/bits/atomic.h (catomic_decrement): Use correct
body macro.
* sysdeps/x86_64/bits/atomic.h
(__arch_c_compare_and_exchange_val_64_acq): Add missing casts.
(catomic_decrement): Use correct body macro.
2006-10-17 Jakub Jelinek <jakub@redhat.com>
* include/atomic.h: Add a unique prefix to all local variables
in macros.
* csu/tst-atomic.c (do_test): Test also catomic_* macros.
2006-10-14 Ulrich Drepper <drepper@redhat.com>
* resolv/arpa/nameser.h: Document that ns_t_a6 is deprecated.
[BZ #3313]
* malloc/malloc.c (malloc_consolidate): Don't use get_fast_max to
determine highest fast bin to consolidate, always look into all of
them.
(do_check_malloc_state): Only require for empty bins for large
sizes in main arena.
* libio/stdio.h: Add more __wur attributes.
2006-11-12 Andreas Jaeger <aj@suse.de>
[BZ #2510]
* manual/search.texi (Hash Search Function): Clarify.
(Array Search Function): Clarify.
2006-11-12 Joseph Myers <joseph@codesourcery.com>
[BZ #2830]
* math/atest-exp.c (main): Cast hex value to mp_limb_t before
shifting.
* math/atest-exp2.c (read_mpn_hex): Likewise.
* math/atest-sincos.c (main): Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Add epoll_pwait.
* sysdeps/unix/sysv/linux/sys/epoll.h: Declare epoll_pwait.
* sysdeps/unix/sysv/linux/Versions (libc): Add epoll_pwait for
version GLIBC_2.6.
* Versions.def: Add GLIBC_2.6 for libc.
* sysdeps/i386/i486/bits/atomic.h: Add catomic_* support.
2006-10-11 Jakub Jelinek <jakub@redhat.com>
* malloc/malloc.c (_int_malloc): Remove unused any_larger variable.
* nis/nis_defaults.c (__nis_default_access): Don't call getenv twice.
* nis/nis_subr.c (nis_getnames): Use __secure_getenv instead of getenv.
* sysdeps/generic/unsecvars.h: Add NIS_PATH.
2006-10-11 Ulrich Drepper <drepper@redhat.com>
* include/atomic.c: Define catomic_* operations.
* sysdeps/x86_64/bits/atomic.h: Likewise. Fix a few minor problems.
* stdlib/cxa_finalize.c: Use catomic_* operations instead of atomic_*.
* malloc/memusage.c: Likewise.
* gmon/mcount.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-profile.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-fptr.c: Likewise.
* resolv/res_libc.c: Likewise.
2006-10-10 Roland McGrath <roland@frob.com>
* sysdeps/mach/hurd/utimes.c: Use a union to avoid an improper cast.
* sysdeps/mach/hurd/futimes.c: Likewise.
* sysdeps/mach/hurd/lutimes.c: Likewise.
2006-10-09 Ulrich Drepper <drepper@redhat.com>
Jakub Jelinek <jakub@redhat.com>
Implement reference counting of scope records.
* elf/dl-close.c (_dl_close): Remove all scopes from removed objects
from the list in objects which remain. Always allocate new scope
record.
* elf/dl-open.c (dl_open_worker): When growing array for scopes,
don't resize, allocate a new one.
* elf/dl-runtime.c: Update reference counters before using a scope
array.
* elf/dl-sym.c: Likewise.
* elf/dl-libc.c: Adjust for l_scope name change.
* elf/dl-load.c: Likewise.
* elf/dl-object.c: Likewise.
* elf/rtld.c: Likewise.
* include/link.h: Include <rtld-lowlevel.h>. Define struct
r_scoperec. Replace r_scope with pointer to r_scoperec structure.
Add l_scoperec_lock.
* sysdeps/generic/ldsodefs.h: Include <rtld-lowlevel.h>.
* sysdeps/generic/rtld-lowlevel.h: New file.
* include/atomic.h: Rename atomic_and to atomic_and_val and
atomic_or to atomic_or_val. Define new macros atomic_and and
atomic_or which do not return values.
* sysdeps/x86_64/bits/atomic.h: Define atomic_and and atomic_or.
Various cleanups.
* sysdeps/i386/i486/bits/atomic.h: Likewise.
* po/sv.po: Update from translation team.
2006-10-07 Ulrich Drepper <drepper@redhat.com>
* Versions.def: Add GLIBC_2.6 to libpthread.
* include/shlib-compat.h (SHLIB_COMPAT): Expand parameters before use.
(versioned_symbol): Likewise.
(compat_symbol): Likewise.
* po/tr.po: Update from translation team.
* nis/Banner: Removed. It's been integral part forever and the
author info is incomplete anyway.
* libio/Banner: Likewise.
2006-10-06 Ulrich Drepper <drepper@redhat.com>
* version.h (VERSION): Bump to 2.5.90 for new development tree.
2007-01-11 22:51:07 +01:00
|
|
|
size_t n = scope->r_nlist;
|
2007-06-09 21:45:57 +02:00
|
|
|
/* Make sure we read the value before proceeding. Otherwise we
|
|
|
|
might use r_list pointing to the initial scope and r_nlist being
|
|
|
|
the value after a resize. That is the only path in dl-open.c not
|
|
|
|
protected by GSCOPE. A read barrier here might be to expensive. */
|
|
|
|
__asm volatile ("" : "+r" (n), "+m" (scope->r_list));
|
|
|
|
struct link_map **list = scope->r_list;
|
1999-02-20 23:05:45 +01:00
|
|
|
|
|
|
|
do
|
|
|
|
{
|
2006-07-10 23:59:43 +02:00
|
|
|
/* These variables are used in the nested function. */
|
1999-07-27 07:53:25 +02:00
|
|
|
Elf_Symndx symidx;
|
1999-02-20 23:05:45 +01:00
|
|
|
int num_versions = 0;
|
|
|
|
const ElfW(Sym) *versioned_sym = NULL;
|
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
const struct link_map *map = list[i]->l_real;
|
1999-02-20 23:05:45 +01:00
|
|
|
|
|
|
|
/* Here come the extra test needed for `_dl_lookup_symbol_skip'. */
|
2006-02-26 21:50:52 +01:00
|
|
|
if (map == skip)
|
1999-02-20 23:05:45 +01:00
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Don't search the executable when resolving a copy reloc. */
|
2001-08-27 00:28:16 +02:00
|
|
|
if ((type_class & ELF_RTYPE_CLASS_COPY) && map->l_type == lt_executable)
|
1999-02-20 23:05:45 +01:00
|
|
|
continue;
|
|
|
|
|
2005-03-18 12:11:42 +01:00
|
|
|
/* Do not look into objects which are going to be removed. */
|
|
|
|
if (map->l_removed)
|
|
|
|
continue;
|
|
|
|
|
1999-02-20 23:05:45 +01:00
|
|
|
/* Print some debugging info if wanted. */
|
2004-03-05 11:29:47 +01:00
|
|
|
if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_SYMBOLS, 0))
|
2005-03-07 07:50:48 +01:00
|
|
|
_dl_debug_printf ("symbol=%s; lookup in file=%s [%lu]\n",
|
2004-03-06 09:19:29 +01:00
|
|
|
undef_name,
|
2005-03-07 07:50:48 +01:00
|
|
|
map->l_name[0] ? map->l_name : rtld_progname,
|
|
|
|
map->l_ns);
|
2007-07-12 20:26:36 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
/* If the hash table is empty there is nothing to do here. */
|
|
|
|
if (map->l_nbuckets == 0)
|
|
|
|
continue;
|
2007-07-12 20:26:36 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
/* The tables for this map. */
|
|
|
|
const ElfW(Sym) *symtab = (const void *) D_PTR (map, l_info[DT_SYMTAB]);
|
|
|
|
const char *strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
|
|
|
|
|
|
|
|
|
|
|
|
/* Nested routine to check whether the symbol matches. */
|
|
|
|
const ElfW(Sym) *
|
|
|
|
__attribute_noinline__
|
|
|
|
check_match (const ElfW(Sym) *sym)
|
|
|
|
{
|
|
|
|
assert (ELF_RTYPE_CLASS_PLT == 1);
|
|
|
|
if (__builtin_expect ((sym->st_value == 0 /* No value. */
|
|
|
|
&& ELFW(ST_TYPE) (sym->st_info) != STT_TLS)
|
|
|
|
|| (type_class & (sym->st_shndx == SHN_UNDEF)),
|
|
|
|
0))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (__builtin_expect (ELFW(ST_TYPE) (sym->st_info) > STT_FUNC
|
2007-10-05 23:25:32 +02:00
|
|
|
&& ELFW(ST_TYPE) (sym->st_info) != STT_COMMON
|
2006-07-10 23:59:43 +02:00
|
|
|
&& ELFW(ST_TYPE) (sym->st_info) != STT_TLS, 0))
|
2007-10-05 23:25:32 +02:00
|
|
|
/* Ignore all but STT_NOTYPE, STT_OBJECT, STT_FUNC, and STT_COMMON
|
2006-07-10 23:59:43 +02:00
|
|
|
entries (and STT_TLS if TLS is supported) since these
|
|
|
|
are no code/data definitions. */
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (sym != ref && strcmp (strtab + sym->st_name, undef_name))
|
|
|
|
/* Not the symbol we are looking for. */
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
const ElfW(Half) *verstab = map->l_versyms;
|
|
|
|
if (version != NULL)
|
|
|
|
{
|
|
|
|
if (__builtin_expect (verstab == NULL, 0))
|
|
|
|
{
|
|
|
|
/* We need a versioned symbol but haven't found any. If
|
|
|
|
this is the object which is referenced in the verneed
|
|
|
|
entry it is a bug in the library since a symbol must
|
|
|
|
not simply disappear.
|
|
|
|
|
|
|
|
It would also be a bug in the object since it means that
|
|
|
|
the list of required versions is incomplete and so the
|
|
|
|
tests in dl-version.c haven't found a problem.*/
|
|
|
|
assert (version->filename == NULL
|
|
|
|
|| ! _dl_name_match_p (version->filename, map));
|
2007-07-12 20:26:36 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
/* Otherwise we accept the symbol. */
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* We can match the version information or use the
|
|
|
|
default one if it is not hidden. */
|
|
|
|
ElfW(Half) ndx = verstab[symidx] & 0x7fff;
|
|
|
|
if ((map->l_versions[ndx].hash != version->hash
|
|
|
|
|| strcmp (map->l_versions[ndx].name, version->name))
|
|
|
|
&& (version->hidden || map->l_versions[ndx].hash
|
|
|
|
|| (verstab[symidx] & 0x8000)))
|
|
|
|
/* It's not the version we want. */
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* No specific version is selected. There are two ways we
|
|
|
|
can got here:
|
2007-07-12 20:26:36 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
- a binary which does not include versioning information
|
|
|
|
is loaded
|
2007-07-12 20:26:36 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
- dlsym() instead of dlvsym() is used to get a symbol which
|
|
|
|
might exist in more than one form
|
2007-07-12 20:26:36 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
If the library does not provide symbol version information
|
|
|
|
there is no problem at at: we simply use the symbol if it
|
|
|
|
is defined.
|
|
|
|
|
|
|
|
These two lookups need to be handled differently if the
|
|
|
|
library defines versions. In the case of the old
|
|
|
|
unversioned application the oldest (default) version
|
|
|
|
should be used. In case of a dlsym() call the latest and
|
|
|
|
public interface should be returned. */
|
|
|
|
if (verstab != NULL)
|
|
|
|
{
|
|
|
|
if ((verstab[symidx] & 0x7fff)
|
|
|
|
>= ((flags & DL_LOOKUP_RETURN_NEWEST) ? 2 : 3))
|
|
|
|
{
|
|
|
|
/* Don't accept hidden symbols. */
|
|
|
|
if ((verstab[symidx] & 0x8000) == 0
|
|
|
|
&& num_versions++ == 0)
|
|
|
|
/* No version so far. */
|
|
|
|
versioned_sym = sym;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* There cannot be another entry for this symbol so stop here. */
|
|
|
|
return sym;
|
|
|
|
}
|
|
|
|
|
|
|
|
const ElfW(Sym) *sym;
|
|
|
|
const ElfW(Addr) *bitmask = map->l_gnu_bitmask;
|
|
|
|
if (__builtin_expect (bitmask != NULL, 1))
|
|
|
|
{
|
|
|
|
ElfW(Addr) bitmask_word
|
|
|
|
= bitmask[(new_hash / __ELF_NATIVE_CLASS)
|
|
|
|
& map->l_gnu_bitmask_idxbits];
|
|
|
|
|
|
|
|
unsigned int hashbit1 = new_hash & (__ELF_NATIVE_CLASS - 1);
|
|
|
|
unsigned int hashbit2 = ((new_hash >> map->l_gnu_shift)
|
|
|
|
& (__ELF_NATIVE_CLASS - 1));
|
|
|
|
|
|
|
|
if (__builtin_expect ((bitmask_word >> hashbit1)
|
|
|
|
& (bitmask_word >> hashbit2) & 1, 0))
|
|
|
|
{
|
|
|
|
Elf32_Word bucket = map->l_gnu_buckets[new_hash
|
|
|
|
% map->l_nbuckets];
|
|
|
|
if (bucket != 0)
|
1999-02-20 23:05:45 +01:00
|
|
|
{
|
2006-07-10 23:59:43 +02:00
|
|
|
const Elf32_Word *hasharr = &map->l_gnu_chain_zero[bucket];
|
2002-04-13 09:55:02 +02:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
do
|
2007-08-21 16:05:39 +02:00
|
|
|
if (((*hasharr ^ new_hash) >> 1) == 0)
|
2006-07-10 23:59:43 +02:00
|
|
|
{
|
|
|
|
symidx = hasharr - map->l_gnu_chain_zero;
|
|
|
|
sym = check_match (&symtab[symidx]);
|
|
|
|
if (sym != NULL)
|
|
|
|
goto found_it;
|
|
|
|
}
|
|
|
|
while ((*hasharr++ & 1u) == 0);
|
1999-02-20 23:05:45 +01:00
|
|
|
}
|
|
|
|
}
|
2006-09-05 04:02:55 +02:00
|
|
|
/* No symbol found. */
|
|
|
|
symidx = SHN_UNDEF;
|
2006-07-10 23:59:43 +02:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (*old_hash == 0xffffffff)
|
|
|
|
*old_hash = _dl_elf_hash (undef_name);
|
1999-02-20 23:05:45 +01:00
|
|
|
|
2006-07-10 23:59:43 +02:00
|
|
|
/* Use the old SysV-style hash table. Search the appropriate
|
|
|
|
hash bucket in this object's symbol table for a definition
|
|
|
|
for the same symbol name. */
|
|
|
|
for (symidx = map->l_buckets[*old_hash % map->l_nbuckets];
|
|
|
|
symidx != STN_UNDEF;
|
|
|
|
symidx = map->l_chain[symidx])
|
|
|
|
{
|
|
|
|
sym = check_match (&symtab[symidx]);
|
|
|
|
if (sym != NULL)
|
|
|
|
goto found_it;
|
|
|
|
}
|
1999-02-20 23:05:45 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/* If we have seen exactly one versioned symbol while we are
|
|
|
|
looking for an unversioned symbol and the version is not the
|
|
|
|
default version we still accept this symbol since there are
|
|
|
|
no possible ambiguities. */
|
1999-07-30 01:46:10 +02:00
|
|
|
sym = num_versions == 1 ? versioned_sym : NULL;
|
1999-02-20 23:05:45 +01:00
|
|
|
|
2000-05-22 18:31:58 +02:00
|
|
|
if (sym != NULL)
|
1999-02-20 23:05:45 +01:00
|
|
|
{
|
|
|
|
found_it:
|
|
|
|
switch (ELFW(ST_BIND) (sym->st_info))
|
|
|
|
{
|
2000-06-08 05:03:00 +02:00
|
|
|
case STB_WEAK:
|
|
|
|
/* Weak definition. Use this value if we don't find another. */
|
2004-03-05 11:29:47 +01:00
|
|
|
if (__builtin_expect (GLRO(dl_dynamic_weak), 0))
|
2000-06-08 05:03:00 +02:00
|
|
|
{
|
|
|
|
if (! result->s)
|
|
|
|
{
|
|
|
|
result->s = sym;
|
2006-07-10 23:59:43 +02:00
|
|
|
result->m = (struct link_map *) map;
|
2000-06-08 05:03:00 +02:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* FALLTHROUGH */
|
1999-02-20 23:05:45 +01:00
|
|
|
case STB_GLOBAL:
|
|
|
|
/* Global definition. Just what we need. */
|
|
|
|
result->s = sym;
|
2006-07-10 23:59:43 +02:00
|
|
|
result->m = (struct link_map *) map;
|
1999-02-20 23:05:45 +01:00
|
|
|
return 1;
|
|
|
|
default:
|
|
|
|
/* Local symbols are ignored. */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If this current map is the one mentioned in the verneed entry
|
|
|
|
and we have not found a weak entry, it is a bug. */
|
2004-03-07 06:26:02 +01:00
|
|
|
if (symidx == STN_UNDEF && version != NULL && version->filename != NULL
|
2000-06-08 05:31:44 +02:00
|
|
|
&& __builtin_expect (_dl_name_match_p (version->filename, map), 0))
|
1999-02-20 23:05:45 +01:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
while (++i < n);
|
|
|
|
|
|
|
|
/* We have not found anything until now. */
|
|
|
|
return 0;
|
|
|
|
}
|